There isn't much to the switchgear. Mostly some good size capacitors and a TO-3 size transistor or two.

It's pretty hard to kill one but over time the caps will dry out and fail. MB electronics are also know to have their share of failed solder joints. To be fair, it's not MB's fault. Single layer PCBs without through plated holes tend to get broken solder joints.

Michael

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Usta haves '69 250/8, '76 280C, 1971 250C 114.023, 1976 450SEL 116.033
Current have, 1983 300SD 126.120